Patent CZ-297034-B6 (CZ)
Title: Virtual information system
Inventor: OSMERA PAVEL
IPC: H04L12/66
Filed: 1998-03-17
Abstract: The present invention relates to a virtual information system providing information services up to accommodation units (1) wherein the system is provided with terminal home devices (31) that are connected via a virtual information center (16) to a non-electric distribution group (17) of sources/recipients (2) of information, whereby the individual accommodation units (1) of an electric distribution group (18) are connected via an electric network (14) of 230 V alternating current voltage or of another voltage value being present in the electric power distribution of the accommodation units (1). At the same time, the input/output circuits (71) of the accommodation unit (1) terminal home devices (31) are provided with an anti-jamming transformer (41) that is connected to the electric network (14) through a capacitor (46) or also a capacitor (47), wherein a center of said anti-jamming transformer (41) winding (68), situated between the primary windings (48) and (49), is connected to a center of bifilarly laid secondary windings (50) and (51), whereby the winding (50) forms together with a parallel-connected capacitor (52) a resonance circuit tuned a carrier frequency, and the differential voltage being present at opposite ends of the windings (50) and (51) is connected through a coupling capacitor (53) to an isolation transformer (42) primary winding (54). The virtual information center (16) is connected to information devices of the sources/recipients (2) either through the Internet computer network (5) or through a telephone network (6) or through a television cable and wireless distribution systems (7), whereby said virtual information center (16) is connected with police information devices (8) or also with post information devices (9) or with other devices (10) of other information service providers. The virtual information center (16) is further connected via a communication node (11) with adjacent information devices and comprises a database system (15) consisting of individual sub databases (12). The individual electric distribution groups (18) are connected via communication adapters (13) to the Internet computer network (5), the telephone network (6) and the television cable and wireless distribution system (7). The electric network (14) formed by the electric distribution network of the accommodation units (1) connects the terminal home devices (31) having output to a television receiver (30) and input via a television remote control (37) or a keypad (38), whereby a personal computer (32) with a printer (39), sensors (33) through (34), actuators (35) and alarm devices (36) are connected to said electric network (14) whereby said alarm devices (36) can communicate with the terminal home device (31) via that electric network. The terminal home device (31) has its microprocessor unit (72) connected via the input/output circuits (71) to the electric network (14) that is connected via a television adapter (70) with the television receiver (30), further through input circuits (76) it is connected with the keypad (38) and directly with a chip card reader (77) and the remote control (37) adapter (75). The input/output circuits (71) have the microprocessor unit (72) output (65) connected via said isolation transformer (43), the winding (63) of which is connected with an isolation plug (67) via a node connecting resistors (57), (60) and a node connecting resistors (58), (59).